Production of a magnetic biosorbent for removing pharmaceutical impurities
| Autor: | Shokoofeh Fakhrian, Hadi Baseri |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Langmuir
Aqueous solution Chemistry General Chemical Engineering Langmuir adsorption model 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Catalysis symbols.namesake Adsorption 020401 chemical engineering Impurity symbols Magnetic nanoparticles Freundlich equation 0204 chemical engineering 0210 nano-technology Nuclear chemistry |
| Zdroj: | Korean Journal of Chemical Engineering. 37:1541-1551 |
| ISSN: | 1975-7220 0256-1115 |
| DOI: | 10.1007/s11814-020-0523-4 |
| Popis: | A magnetic biosorbent was synthesized from rice straw (a biological waste) and magnetic particles of Fe3O4. The produced biosorbent, which was characterized by XRD, FE SEM, FTIR, and TGA experiments, was used for adsorption of two drug chemical components of Penicillin G and Amlodipine Besylate from aqueous solutions. Effects of various operating parameters such as adsorption temperature (10 to 70 °C), the dose of adsorbent (1 to 5 g/L), contact time (30 to 360 min), and pH of system (pH=4 to 11) on the adsorption efficiency were studied. The produced adsorbent can remove impurities with maximum adsorption efficiency of about 95% for Pen-G and 65% for AMB; therefore, it is a good adsorbent for removing pharmaceutical impurities from wastewater. Moreover, the produced biosorbent can easily separate from the solution by using an external magnetic field. Five isotherm models—linear adsorption model, Langmuir, Freundlich, Sips, and Toth—were used for describing the results; and based on Langmuir isotherm, the maximum adsorption capacity of the produced biosorbent is 164.7 mg/g for Pen-G and 229 mg/g for AMB. The adsorption kinetics was well fitted with the pseudo-first-order kinetic model, and it is shown that the adsorption is extremely in physical mode. |
| Databáze: | OpenAIRE |
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